Stove-lid



(Remodel.)

W. E. SHBAFFER.

lSTOVE LID.

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nlllll N. PETERS, Phamumognpm. wuhingnm n.4;

UNITED STATES PATENT OFFICE.

VILLIAM E. 'SHEAFFR OF READING, PENNSYLVANIA.

SPECIFICATION forming part of Letters Patent No. 341,062l dated May 4, 1886.

Application filed July 23, 1885. Serial No. 172,486. (No model.)

To all whom it may concern:

Be it known that LWILLLIM E. SHEAFFER, a citizen of the United States, residing at Reading, in the county of Berks and State of Pennsylvania, have invented certain new and useful Improvements in Stove-Lids, of which the following is a specification.

My invention relates to that class of stovelids which are constructed of two sections or frames, each consisting of an annulus or ring and radial ribs or braces, which confine between their meeting faces plates of thin sheet material-such, for example, as mica.

My invention consists in so altering and simplifying the construction of such lids, as hereinafter fully described, and more particularly pointed out in the claims, as to render them the better adapted for cooking, ironing,

dsc., 'and to withstand the intense heat neces- 1 sary for these purposes.

In order that my invention may be more fully understood, I will proceed to describe it with reference to the accompanying drawings, in which- Figure I is an under side, and Fig. II a top view, of the upper and lower sections, respectively, the former showing in dotted lines the positions which the thin plates occupy. Fig. III is a section on the line 3 3, Figs. I and II. Figs. IV and V are views of two of the plates removed,'and Fig. VI is a transverse section of one of the cross bars or braces of the frame.

In the drawings, a represents the upper, and b the lower, section of my improved lid, each of which is formed of an annulus or ring, a b, respectively, having corresponding radial cross bars or braces, the number of which may be varied at will. I prefer to employ four, made narrow, so as not to obstruct the upward passage of the heat, and deep for affording the necessary strength. The braces ofthe upper section are shown at a, and those of the lower section at b.

c represents the thin plates, which rest at these edges upon the :edges of the braces b and the annulus or ring b', as shown in dotted lines in Fig. I.

,d represent projections from the under sur- ,face of the cross-bars a of the upper section,

the two sections together, and prevent their relative rotation, and also to prevent the displacement of the several plates c.

The braces b of the lower section are shown in Fig. III to be of gradually-increasing depth from their outer extremities, fr, to the center z of the frame, for the purpose already set forth, while Fig.VI shows the bevel or approximate V-shaped cross-section.

For the purpose of forming the undercut cavity for the reception of the lid-lifter, one of the braces of each section is enlarged laterally, as at e. j represents the depression in the upper surface of the brace b" of the lower section, b, and g the aperture through the enlarged portion e of the brace a of the upper section, a. rlhe corners of the plates c,which are next the enlargement e, are cut away, as at c.

h represents a central stud for securing the parts together,its head being countersunk into the upper surface of the section @,and its point perforated for the passage of a locking-key, i. The annulus or ring a of the upper section, a, is of larger diameter and of greater thickness than the annulus or ring b of the lower section, I, and is formed with a groove or rabbet, k, within which said lower section fits snugly, as shown in Fig. III. rIhis aids materially in holding the two sections rigidly in concentric position.

In constructing my improved lid, the two sections are slightly dished on their inner faces, or arched outward in such a manner that when they are placed together they will come to their bearings` first at their outer edges, as shown by dotted lines in Fig. III. The mica plates having been put in place, sufficient pressure is applied to force the two sections close together, as shown in full lines in the same figure.4 The central stud, h, is then inserted and the key k passed through it. This construction prevents the outer edges of the two sections from separating when they become heated,and makes a tight joint, which renders the escape of smoke or gas impossible.

Having thus described my invention, the following is what I claim as new, and desire to secure by LettersI Patent:

1. The combination, with the section b of the frame, of the dished or bowed section a, pressed or sprung toward the section b, the thin plates c, confined at their edges between ICO said sections, and the central stud, 7L, securing and the central stud securing said plates tosaid parts together, substantially as set forth. gether, and having its head iiush With the sur- 2. In a stove-lid, the combination, with the face of the upper Section, substantially as set 15 upper flat-topped section consisting of an anforth. 5 nulus having an annular groove or rabbet in 3. The combination, with the two sections its under side, and radial ribs or braces hava and b of the frame having the lifting-cavity lower section consisting of au annulus fitting Said groove or rabbet, and radial ribs or braces ro corresponding to those of the upper section, having a central perforation, of the thin plates secured at their edges between said sections,

the purpose set forth.

XVM. E. SHEAFFER lVitnesses:

CHARLES SPRAUL, L, C. PURMAN.

ing acentral eountersunk perforation, andthe lf g, of the plates o, out away at c', as and for l 

